Results 131 to 140 of about 1,979 (182)
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Phylogenetics of Perissodactyla and Tests of the Molecular Clock
Journal of Molecular Evolution, 2000Two mitochondrial genes, the protein-coding cytochrome c oxidase subunit II (COII) gene and a portion of the 12S rRNA gene, were used for phylogenetic investigation of the mammalian order Perissodactyla. The primary objective of the study was to utilize the extensive fossil record of perissodactyls for calibrating molecular clocks and comparing ...
J E, Norman, M V, Ashley
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Molarization of the premolars in the Perissodactyla.
Proceedings of the Zoological Society of London, 1952SUMMARY. Molarization of the premolars in perissodactyls is reviewed in the light of that of the milk‐molars. The premolar patterns are closely related to those of the milk‐molars, the closest resemblance being shown, in most forms, to the milk‐molar that the premolar replaces. In a few Eocene forms, however, the premolars seem rather to resemble milk‐
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Origins of spondyloarthropathy in Perissodactyla.
Clinical and experimental rheumatology, 2002Spondyloarthropathy has clearly been documented as not limited in occurrence to humans. Transmammalian in nature, it is of interest to understand the antiquity, and perhaps the origins, of this disorder in animal groups sufficiently represented in the skeletal record.Fossil and recent skeletons of perissodactylae from North America were systematically ...
B M, Rothschild +2 more
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